Sometimes it really is a plight to mark drill holes, especially when other objects block the way and make it impossible to reach the right spots. Luckily edding's 8850 carpenter pen is equipped with an extra-long and fine nib, which releases its waterproof black ink for precise, permanent marking. No wonder it's used by carpenters and keen DIY handymen alike. The quick-drying, smudge-proof edding works on almost all dry and dust-free surfaces. With its strong and long metal nib it's the best tool to mark the right spot to build strong and lasting constructions - professionally or at home.